Solve the following systems of equations graphically:
$2 x+3 y+5=0$
$3 x-2 y-12=0$
The given equations are
$2 x+3 y+5=0$$.(i)$
$3 x-2 y-12=0$$.(i i)$
Putting $x=0$ in equation $(i)$, we get:
$\Rightarrow 2 \times 0+3 y=-5$
$\Rightarrow y=-5 / 3$
$x=0, \quad y=-5 / 3$
Putting $y=0$ in equation $(i)$ we get:
$\Rightarrow 2 x+3 \times 0=-5$
$\Rightarrow x=-5 / 2$
$x=-5 / 2, \quad y=0$
Use the following table to draw the graph.
Draw the graph by plotting the two points from table.
Graph of the equation.... (ii):
$3 x-2 y=12 \quad \ldots \ldots \ldots .(i i)$
Putting $x=0$ in equation $(i i)$ we get:
$\Rightarrow 3 \times 0-2 y=12$
$\Rightarrow y=-6$
$x=0, \quad y=-6$
Putting $y=0$ in equation $(i i)$, we get:$\Rightarrow 3 x-2 \times 0=12$
$\Rightarrow x=4$
$x=4, \quad y=0$
Use the following table to draw the graph.
Draw the graph by plotting the two points from table.
The two lines intersects at points $P(2,-3)$
Hence, $x=2$ and $y=-3$ is the solution.